The periodic table captures a subtle pattern that runs through the chemical elements, the fundamental building blocks of everything around us: from the aluminium in bike frames to the xenon gas in ...

A list of all chemical elements known to mankind sorted by the number of protons they contain within the atom. There are 118 elements starting with hydrogen, which has one proton. The first 94 are ...

Cations are ions that are positively charged. Anions are ions that are negatively charged. Ions are charged atoms or molecules. If a balanced atom loses one or more electrons, it will become a ...